When changing colour, the process is simple. The impulse from the light entering the cuttlefish’s eye, goes to the brain, then directly to its chromatophores. These are pigment-containing and light-reflecting organelles inside cells.

This allows the cuttlefish to instantly change colour, without even realising it.

The cuttlefish ranks top when it comes to blending in.

Disguising itself as sand is a common trick used to evade dolphins and sea lions.